Writing-tablet and manuscript-holder



(No Model.) 3 Sheets-Sheet 1.

B. W. SCOTT. WRITING TABLET AND MANUSCRIPT HOLDER.

No. 508,349. Patented Nov. 7, 1893.

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WITNESSES.

A TTOHNEYS.

THE NATIONAL \JwosaAPHma COMPANY,

WASHINGTUN. o. c.

3 Sheets-Sheet 2.

(No Model.)

B. W. SCOTT. WRITING TABLET AND MANUSCRIPT HOLDER.

Patented Nov. 7, 1893.

! s INVENTOI? A TTOBNEYS.

(No Model.) A 3 Sheets-Sheet 3.

B. W. SCOTT. WRITING TABLET AND MANUSCRIPT HOLDER.

Patented Nov. 7, 18-93.

N VE N TOE 2mg A rromvEys.

NITED STATES PATENT O'FFIC.

BARTON w; soorr, OF SAN JOSE, ASSIGNOR TO HIMSELF, AND WILLIAM .IRIOE,or SARATQGA, CALIFORNIA.

WRITlNG- TABLET AND MANUSCRlPT-HOLDER.

sPEcIFicA'rIoN forming part of Letters Patent No. 5 08,349, datedNovember 7, 1 see. Application filed January 17,1893 Serial No. 458,638-(No model.) i

To all whom, it may concern.

Be it known that I, BARTON W. SCOTT, of

San Jos, in the county of Santa Clara and State of California, haveinvented a new and Improved Writing-Tablet and Manuscript Holder, ofwhich the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved handactuated writing tablet and manuscript holder, which is simple anddurable in construction, and more especially designed for the use ofstenographers, writers, public speakers, type setters and others, andarranged to permit of conveniently writing subject matter onv acontinuous sheet or web of paper, and displaying the written matter inthe proper position either for the speaker when delivering the speech,or for the copyist when copying, or the type setter to work from or forother purposes.

Theinvention consists of a casing provided with two winding drums forthe paper, a main shaft journaled in the casing, and two sets of gearwheels actuated from the said shaft, and adapted to be geared with thesaid winding drums. r

The" invention also consists incertain parts and details, andcombinations-of the same, as will be hereinafter described and thenpointed outrin the claims. 2

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding partsin all the figures.

Figure 1 is a perspective view of the improvement showing the cover ofthe casing open. Fig. 2 is a transverse section of theism, parts beinginsectionr Fig. 5 is a plan r view of the casing and contents with thecover top, frame and: table removed. Fig. 6 is a transversesectfion; ofa clutch mechanism for the tripping-device.; a face view of the clutchwheel. Fig- 8 a longitudinal sectional side elevation of *theimprovement on the line 8'8 of Fig. 5. Fig. 9,: is a similar view of thesame onthe line 9-9 of Fig. 5.

Fig. 10 is a longitudinal section of the im provement on the line10--'10 of Fig. 5. Fig. 11 is a transverse section of part of theimprovement on the line 11-11 of Fig. 8, and Fig. 1 2 is a rear sideelevation of the mechanism for shifting the paper line by line.

The improved writing tablet and manuscript holder is provided with acasing A preferably made of a light sheet metal, such as aluminum orother material, the casing being arranged in the shape of a book asplainly illustrated in Fig. 1, with one of the covers A arranged toswing open to present a rectangular. frame A hinged at A to the top edgeof the rear side A of the casing A, the front end of the saidrectangular frame A resting on the top edge of the front side A, asplainly shown in the drawings. This hinged frame A is locked in place atthe front side by a spring pressed latch A pivoted to the inside of thefront side A. Under the rectangular frame A is arranged a table B overwhich passes the paper 0 made in a continuous sheet or web and on whichthe subject matter is written or the matter written thereon is readfrom, in delivering a speech or copying the subject mattergas the casemay be. The table B is supported at its front on posts B, erected insideof the casing A, at the front side A thereof, as plainly shown in Fig.2, the rear side of the said table resting on a longitudinal]y-extending partition A formed in the casing near the rear-end A asplainly illustrated in Figs. 2 and 5. v

The front and rear ends'of the table B are bent downward to form flangesB fitting over the posts B, and the partition A to securely hold thesaid table in place. The table B is preferably made of a light sheetmetal and is strengthened on its under side by a series oftransverselyextending ribs B as plainly indicated in Figs. 2, 9 and 10.The front and rear sides of the-table B-project beyond the opening ofthe frame A while the ends of the said table do not quite reach to theends of the frame opening, as will be readily understood by reference toFigs. 8 and 9.

The paper 0 is in the form of a continuous sheet of any desirablelength, and is adapted to be wound up or unwound from atransversely-extending paper drum D,from which in the partition A andthe rear side A the paper passes over a roller E located in the upperend of the casingA and journaled at its ends in the front side A and thepartition A of the said casing, as plainly shown in Fig. 5.

The top of the roller E is in alignment with the top of the table B, sothat the paper passes from the roller onto and over the'top of the tableB, to finally pass from the lower end of the latter under the frame Aupon a second roller F arranged transversely in the lower end of thecasing A and likewise jour naled in the front and rear sides of theeasing A. The paper passes from thelower end.

of the roller F to a paper drum G arranged in front of the roller F andextending transversely, parallel to the other drum D and the rollers Eand F, as will be readily understood by {reference to "Fig. 5. The ends0' C of the paperOare held in place on theshafts D and G bya suitableclampingspring, see Fig. 5, or other device. Now, it will be seen thatwhen the Epaper drum G is turned in the direction of the arrow 0., thenthe paper 0 is wound on the said drum and 'unwo'nnd from the drumD,thepaper passing over the table B in thedirection of the arrow 1).-\Vhen, however, the drum D is rotated in the direction of the arrow 0',then the'paper winds-up on the drum D and unwinds from the drumGfthepaper'then passing overthe table B-in the inversedireotionof thearrow 1).

In order to impartthe moveinent'described to the paper drums D and G, Iprovide a hand actuated mechanism partly arranged within the casing Aand part on the rear side thereof, as plainly illustrated in thedrawings. This mechanism serves to rotatethe drums D and G inthedirections mentioned, for i111- parting a traveling motion to thepaper 0 in either'aforward Orbackward direction, that is, in thedirection of the'arrow'b or the inverse direction thereof. Thishandac'tuated mechanism is provided with a transversely extending shaftH journaled in suitablebearings arranged onthe front and rear sides Aand A respectively, the saidshaft heinglocated between the drums? G andD, as plainly illustrated in Fig. 5. The forward end of the shaftHprojects into-a recess formed on the outside of the front side A of thecasing A, as shown in Figs. -1and 2, and this outer end of the s'haftismade'square as at H, for receiving a key to conveniently turn the saidshaft for the purpose hereinafter more fully described.

Near the rear end of the shaft H, at the back of the partition A issecured a gear wheel H adapted to actuate two trains of gear wheelsI-and J, of which the train of gear wheels I isadapted to be geared withthe drum D, and the other train of gearwheels is adapted to be gearedwith the paperdrum G. The train of gear wheels I is arranged on one sideof the gear wheel H and is provided with a pinion I in mesh with thesaid gear wheel H and mounted to rotate on a shaft I held On atits lowerend at D to the inner surface of the rear side A of the casing A. Theupper end of the lever D is reduced to form a handle which extendsthrough an opening A in the rear side of the frame A see Figs. 1 and 8,so that the end of this lever can be taken hold of on top "of thecasingA by the operator when the cover A is swungbaek. The longitudinals'winging motion of the lever D is limited by. a stop'pin, or projection(not shown) 'secured-onth'ebackof thelever D near its handle i end, thesaid pin orprojection being adapted to engage'either-of two notchesordents D and D formedintherea'r side A, as shown in Fig. 8. Now,it willbeseen that when the-lever D is movedto theleft, the-pinion D is throwninmeshwiththe gear-wheel I and when theshaft l-lis rotatedand thetrainof gear wheels I is-set in motion thereby, then a rotary motion is givento t'hesaid pinion D and consequentlyto the paperdrumd) which latterthen revolves in' thedirection 'of themrow 0', to wind up the paper. Theother-train of gear wheels J for the drum G -is-similarly constructed tothe train ofgear wheels I, and is arranged on the-opppositeside of thewheel H to that on which the train'of gear wheels I is located. This"train of gear "whee-ls J is provided with apinion J in 'mesh with thegear wheel H and 'inountedto turn on ashaft J held in hearings in thepartition A and the rear side A. On the hub of this .pinion J is secureda large gear wheel J in mesh with a pinion J 4 heldon a shaftJ,journaled in the said partition A and 'rear side-A On the hub of thispinion J is secu'red a-large gear wheel J adapted to die engaged by apinion Gr held on the reduced end G of the shaft of the drum G. of thisshaft G is journal'ed insuitable bearings in alever G3 arrangedvertically and pivoted at its lower end at'G to the inner surface-of therear side A of the casing A. The upper end of this lever G3 is reduced'to form a handle which'extends through an opening A in the rear side ofthe frame A see Figs. 1 and 8; so that the *end of this lever can betaken hold of on top of the casing A by the operator, whenever the coverA is swung back. The longitudinal swinging motion of the lever G islimited by a stop pin arranged at the back of the lever Gisee Fig.11,-and adapted to engage a'dent G arranged on one side of the handleend of the saidlever, see-Fig. 8, and formed in the rear side A. Now, itwill be seen that when the lever G is moved to the right its pinion G isthrown in The rear reduced-end mesh with; the gear wheel J and as thelat-.

terrec'eivesa rotary motion when the vmain driving shaft H is turned, arotary motion is given to the drum G to wind up the paper thereon forthe purpose hereinafter more fully described.

In order to rotate the-paper drum D for shifting the paper line by line,;I provide the mechanism K arranged in the upper end of the casing Abetween the partition A7 and the rear sideA see Figs. 5, 8 and 12. Whenthe lever D .is moved to the right, the pinion D is thrown in mesh witha large gear wheel K mounted to rotate loosely on a short shaft K heldin suitable bearings in the partition A on the side A. A lever K isloosely ful-v crumed on the shaft K? and is provided with an upwardextension adapted to pass through a notch formed in the frame A near.the opening A as shown in Figs. 1 and 8. The outer end of this extensionof the lever K carries a button K adapted to be pressed on by theoperator. Onthe lever K is held a spring pressed pawl K engaging thegear wheel K, so that when the button K is pressed, the said lever Kswings downward and the pawl K imparts a rotary motion to the gear wheelK, which onaccount of being in mesh at the time with the pinion D,rotates the paper drum D in the direction of the arrow 0, to wind up thepaper thereon. .A spring K is connected with the lever K to draw the latter back into its uppermost position, as soon as the pressure on thebutton K ceases. A dog K engages the gear wheel K to prevent a returnmovement of the latter. The distance the button K is pressed downregulates the distance the sheet of paper 0 is wound on the paper drumD. Usually however, the button Ktis pressed such a, distance as to movethe paper forward the distance between two lines on the paper, so thatevery time the button K is pressed a new line is presented to theoperator writing on the paper, the hand being supposed to be stationary.

When the lever D is in a verticalposition, as shown in Fig. 8, itspinion D is out of mesh with either the gear wheel I or the gear wheelK. This intermediate position of the lever D is necessary so that thepaper can unwind from the paper drum D and wind up on the drum G, asbefore mentioned at the time the shaft H is turned. f In a like mansnor, the pinion G is held out of mesh as shown in Fig.8, at the time thepinion D is in mesh with its gear wheel I for the purpose of winding upthe paper on the drum D.

In orderto return the paper the distance of one page at a time, the pagebeing considered the amount displayed in the opening of the frame Aadevice L is provided having a segmental bevel gear wheel L mountedtor0.- tate loosely on the rear end-of the shaft H and in mesh with a likesegmental bevel gear wheel L secured on a longitudinally-extendingshaftL mounted to turn in suitable bearings L attached to the rear sideA of the easof the said annular flange H held on the respective arm Lpresses against ing A. The shaft L extends with itslower square end L tothe lower end of the casing A and this square end L is adapted to beengaged by a key L having a finger piece, as indicated in dotted linesin Fig. 5. A coil spring L attached at one end to a bar secured on thecasing A is connected at its inner endwith one side of the bevel gearwheel L, so that when the spring is wound .up on turning the gear wheelthe latter will automatically return by the action of the spring L".

In order to connect the bevel gear wheel L with the gear wheel H torotate the latter in .onedirection only, I provide the rear face of thesaid gear wheel with an annular flange H see Fig. 3. On the hub of thebevel gear wheel L are formed arms L extending in opposite directionsand each carrying a brake shoe L adapted toengage the inner surface 11 Aspi n g L the brake shoe L to hold, the same in fI'lC, tional contactwith the flange H Now, it, will be. seen that when the geanwheel L isturned in one direction, the brake shoes L remain out of frictionalcontact with the fiange H but when the said gear wheel L is turned intheopposite direction, the brake shoes L enga e the said annular flan e.and t carry the same along, thus turning the gear wheel H which, by itsconnection with the train of gear wheels I actuates the lattertoreper 0,the distance of one page.

.100 olve therdrum D sufficiently to turn the pa- In order to keep themechanism locked dur:

ing the time the paper is to remain at a' standstill, I provide a brakemechanism N under the control of the operator. This brake mech: anism Nis provided with a brake shoe N adapted to beheld in frictional contactwith the periphery of the. gear wheel J of the train of gearwheels J,see Figs. 5 and 8. The brake block N is held on a pin N projecting fromthebrake lever N arranged between the partition A andthe rearside A thefulcrum of the lever being on the partition. A spring N secured on thecasing is connected with.

the said lever N so as to move the latter up.- ward to hold the brakeshoe N in frictional contact with the wheel J so as to lock the saidtrain of gear wheels in position. The freeend of the brake lever N ispivotally connected with an arm Niconnected by an articulated joint Nwith one arm of a bell crank lever N pivoted to the casing and providedon its upper arm with a button N projecting through a recess in one edgeof the frame A so that the said button is under the control of theoperator.

A tripping mechanism 0 actuated from the roller Fis connected with thebrake mechan N? is provided with a friction roller N and a fixedL-shaped arm L adapted to engage op.- posite sides of the cams O and 0formed on the front face of the gear wheel 0 mounted to rotate looselyon a short shaft 0 journaled in the partition A and the rear side A ofthe casing A. The gear wheel O is in mesh with a pinion O mounted torotate loosely on the shaft F of the roller F,the said pinion 0 beingprovided at its front face with a series of recesses 0 arranged in acircle, see Fig. 7,

and adapted to be engaged by a pin P pro-.

jecting rearwardly from the rear face of a grooved shifting wheel Pmounted to slide on and to turn with the shaft F of the roller F, asplainly illustrated in Figs. 5 and 6. The hub P of the wheel P isprovided for this purpose with a slot P engaged by apin P fastened tothe shaft F, the said pin permitting the wheelP to slide to engagethe'pin P'with one of the apertures O and at the same time the pin Pcauses the wheel P to revolve at the time the roller F is turned by thetraveling paper unwinding from the drum G and winding up on the drum D.l he groove in the periphery of the wheel Pisengagedby a pin Pprojecting from a lever P fulcrumed at its lower end at P on the rearside A as plainly shown in Fig. 8. The upperend of this lever P extendsthrough an aperture A in the frame A, so that the outer'end of theleverisunder the control of the operator, who can shift the levertransversly to move the pin P in or out of contact with one of theapertures 0 In order to lock the lever P in either an inward or outwardposition I engage the said lever with notches P and P formed in a bar Pextending transversely and secured on the partition A and the rear sideA, as illustrated in Fig. 5. When the paper travels over the roller F atthe time the paper winds up on the drum D, and when the lever P isshifted transversely to move the pin P in contact with an aperture 0 inthe gear wheel 0 then the latter is rotated with the said roller Fandimparts -a rotary motion to the gear wheel 0 so that the cams O and O onthe said gear wheel 0 can act on the friction roller N so as to open thearticulated joint N connecting the arm N with the bell crank lever NThis is done to stop the traveling motion of the paper at the time thelatter moves in the inverse direction of the arrow b and has movedthedistance of one page, that is, the distance exposed to view in theopening of the frame A. When the lever N is in its usual position asshown in Fig. 4, then the brake shoe N is supplied on the gear wheel .1,the button N of the bell crank lever N then being in an uppermostposition. Now, when it is desired to rotate the drum G by the train ofgear wheels J, the latter must be unlocked by releasing the brake shoe Non the periphery of the gear wheel J. This is done by the operatorpressing the button N so that a swinging motion is given to the bellcrank lever N which, by its connection with the arm N pivoted to thelever N causes the latter to swing downward, thus moving the'brake shoeN out of frictional still and the cams O and O are out ofaction.

as regards the opening and closing of the articulated joint N connectingthe arm N with the bell crank lever N. The paper on the under side ofthe roller F is pressed in contact with the latter near the middle by aroller Q made of felt or other suitable soft material and journaled in aframeQ' projecting from a transversely-extending shaft-(.13 mounted totu rn in suitable bearingsarranged in the front side A and partition A.A spring Q is coiled on the said shaft Q and fastened with one end tothe side A and at its other end on a pin secured onthe shaft Q so as tohold the roller Q always in contact with the under side of the paper 0to press the latter against the roller F. The latter, aswell as theroller E in the upper part of the casing A, is preferably covered withrubber or other suitable elastic material to increase the adhesion ofthe paper on the said rollers to prevent slipping.

A brake shoe S presses the paper on the paper drum G, the said brakeshoe being arranged on the under side-of the paper and secured on an armS projecting from a trans versely-extending shaft S journaled insuitable bearings in the side A and the partition A Aspring S is coiledon one end of the shaft S and secured at one end to a disk S fixed tothe side A and provided with a series of apertures S one of whichisengaged by the end of the spring. The latter is attached at its otherend to a pin on the said shaft S the said spring serving to hold the armS upward to move the brake shoe S in firm contact with the paper on theincreasing and diminishing of the roll of paper, as it accumulates orlessens on the drum G. The disk S serves to increase or decrease-thetension 'of the spring The bearings T for the shafts of the drums G andD, and the shafts of therollers E and F on the front side A, arepreferably of the construction illustrated in Fig. 10, each hearing Tbeing formed with a semi-circular lower seat part T and a beveled toppartT secured in a spring T fastened to the lower part T. One side ofthe latter is slightly beveled so as to form a V-shaped groove when theupper part T is over the seat for the shaft, as plainly shown in Fig. 9.Now, it will be seen that in order to place one of the shafts in itsbearing T, the end is simply passed down the beveled parts of thehearing so that the upper part T finally swings to one side, its springT permitting such movement until the'shaft has dropped into the openingin the lower part T. The spring pressed upper part T then snaps over theend of the shaft and holds the same securely in place in the bearing. Aspreviously described, the opposite bearings of the shafts G and D are inthe levers G and D respectively.

The operation is as follows: In using the machlne for writing on thepaper 0, the operator places his right hand and pen or penoil on 1 themanuscript paper in the position most convenient for him, with his lefthand on the open cover A, so as to hold the latter in an open position.The operator then places theleft forefinger on the button K held manuppermost position by thespring K and on presslng the said button thelever K by its pawl K turns the gear wheel K in mesh with the pinion D,so-that the paper drum D winds up the paper, the drum turning in thedirection of the arrow c,'and the paper moving over thetableB inthe'inverse direction of the arrow'b, Now, as soon as-the operator hasfinlshed aline he presses the button K down again to move the paperforward the distance of one or two lines accordingto the depth thebutton K is depressed The paper -C is of suflicient length to enable areporter or other person to note down a lengthy speech or other matter,1t being understood that the paper is shifted-in the inverse directionof the arrow b one'or two lines at a time on pressing the button KNow,in case the operator desires to review and correct writings wound upon the paper drum D, he throws the lever D into an intermediate positionand moves the lever G to the right, so as to bring the pinion G in meshwith the gear wheel J and then applies a key on the square end H of theshaft H to turn the latter so as to actuate the train of gear Wheels Jto revolve the drum G, which rewinds the paper, the latter thentraveling in the direction of the arrow 1). It is understood that thepaper now unwinds from the paper drum D and travels over vthe table B.When the paper has finallybeen wound up again on the paper drum G thefirst line the operator has written again appears in the opening of theframe A and the party desires to correct or read off the writtenmatter-or to copy the same page by page, he then moves the lever G tothe left to disengage the pinion G from the gear wheel J 6 and moves thelever D to the left to move its pinion D in gear with the gear wheel I.The operator also moves the lever P transversely toconnect the shaft Fof the roller F with the pinion O by the shifting wheel P engaging withits pin P one of the apertures O of the said pinion 0 Now, as soon asthe operator has read or copied the first page as it appears in theopening of the frame A he presses with his finger the key L downward, sothat the shaft L is rotated and'the gear wheel L meshing in the gearwheel L rotates the latter to Wind up the return spring L the brakeshoes L then being off the annular flange H of the gear wheel 11'. Assoon as the operator releases the pressure on the key L", the wound upspring L causes its gear wheel L to return, at the same time carryingalong the arms L and the brake shoes L", which now clutch the flange Hthus rotating the gear wheel H and the latter by its con eral partsdescribed are so arranged and. geared in proportion, that the returnmovement of the spring will shift the paper the distance of one page, sothat the second page of themanuscript will be displayed in the openingof the frame A The roller F which vis rotated by the paper traveling inthe in.-

verse direction of the arrow bcauses the gear wheel 0 carrying the camsO and O to make one-half revolution for each page of manuscript, so thatthe cams O and 0 act on the bell crank lever N by one of the cams comingin contact with the friction roller N and the arm N so as to hold thebrake shoe N 0d the wheel J 6 until the paper has traveled the distanceof one page,-after which the friction roller N and the arm N pass offthe respective cam to again permit the spring N to swing the lever Nupward, so as to ap-' ply the brake shoe N on the gear wheel J to stopthe actuating mechanism at the time the bottom of the first pagedisappears in the upper end of the opening of the frame A IItisunderstood that during the return movement of the gear wheel Lcaused'by the action of the spring L both trains of gear wheels I and Jare rotated from the gear wheel H and it is necessary to unlock thetrain of gear wheels J by releasing the brake shoe N, the operatorpressing the button N for thatpurpose, as previously explained. It willbe seen that by this arrangement page after page is displayed in theopening of the frame A the operator only having to press the key Ldownward to wind up the return spring L which. on the release of the keyactuates the mechanism as described. It will further be seen that inthis manner the machine will display before a public speaker his notesor his full manuscript, for use in delivering the speech or the entirematter is presented before a type setter as his copy, or before a playerof a musical instrument as his music.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent:

1. In a device of the class described, the combination with a maindriving shaft carrying a gear wheel, of two trains of gear wheelconnected with the said main shaft gear wheel, paper drums adapted to bethrown in mesh with the said trains of gear wheels, and a springmechanism connected with the said main shaft gear wheel a depressing keyto wind the spring, and means whereby on releasing the key thecompressed spring actu ates the said main shaft gear wheel and thetrains of gear wheels, substantially as shown and described.

2. In a device of the class described, the combination, with a casingprovided with a table over which passes the paper to appear in anopening formed in the top of the easing, of a main driving shaft adaptedto be turned by hand and carrying a gear wheel, a spring mechanismconnected with the said gear wheel, a depressing key to wind the spring,two trains of gear wheels in mesh With-the said main shaft gear wheel,two paper drums journaled in the said casing parallel to the main shaftand adapted to be thrown in mesh with the said trains of gear wheels,and a brake mechanism connected with one of the said trains of gearwheels to lock the driving mechanism, substantially as shown anddescribed.

3. In a device of the class described, the combination with a casingprovided with a table over which passes the paper to appear in anopening formed in the top of the casing, of a main driving shaft adaptedto be turned by hand and carrying a gear wheel, two trains of gearwheels in mesh with the said main shaft gear wheel, two paper drumsjournaled in the said casing and adapted to be thrown in mesh with thesaid trains of gear wheels, a brake mechanism connected with one of thesaid trains of gear wheels to lock the driving mechanism, and a trippingmechanism, substantially as described, for automatically unlooking thesaid brake mechanism to hold the brake shoe oh? its brake wheel duringthe time the paper runs back over the table the distance of one page, asset forth.

4, In a device of the class described, the combination with a maindriving gear wheel provided with an annular flange, of a segmental gearwheel mounted to rotate loosely on the shaft of the said main gearwheel, a spring connected with the said segmental gear Wheel and adaptedto be wound up by the latter, and brake shoes pivoted upon armsprojecting from the said segmental gear wheel, the said brake shoesbeing adapted to engage the annular flange of the said driving gearwheel, substantially as shown and described. [5. In a device of theclass described, the combination with a main driving gear wheel providedwith an annular flange, of a seg mental gear wheel mounted to rotateloosely on the shaft of the said main gear wheel, a spring connectedwith the said segmental gear Wheel and adapted to be wound up by thelatter, brake shoes pivoted upon arms projecting from the said segmentalgear wheel, the said brake shoes being adapted to engage the annularflange of the said driving gear wheel, and springs pressing on the saidbrake shoes, substantially as shown and described.

6. In a device of the class described, the combination with a maindriving gear wheel provided with an annular flange, of a segmental gearwheel mounted to rotate loosely on the shaft of the said main gearwheel, a spring connected with the said segmental gear wheel and adaptedto be Wound up by the latter, brake shoes pivoted upon arms projectingfrom the said segmental gear wheel, the said brake shoes being adaptedto engage the annular flange of the said driving gear wheel, ashaftcarrying a segmental gear wheel in mesh with the first named segmentalgear wheel, and a key held on the said shaft and adapted to be pressedon by the operator to rotate the shaft andthe segmental gear wheels towind up the spring, substantially as shown and described.

BARTON W. SCOTT.

Witnesses:

C. K. STETSON, WM. RICE.

